Natrol Glucosamine Chondroitin MSM is made up of the most beneficial joint health ingredients are combined to give joints the support they need. Glucosamine works hard to regenerate and rebuild the cartilage tissue and also help to ease the joint pain caused by arthritis. Chondroitin helps maintain the structural integrity of this tissue and promotes lubricating fluids for the joints. Lastly, MSM promotes joint and physical function by helping to maintain the elasticity of your joint tissue. With this triple support, your joints will have the opportunity for optimal flexibility, mobility and comfort.